Patents by Inventor James E. Dahlman

James E. Dahlman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240117382
    Abstract: The invention provides for delivery, engineering and optimization of systems, methods, and compositions for manipulation of sequences and/or activities of target sequences. Provided are delivery systems and tissues or organ which are targeted as sites for delivery. Also provided are vectors and vector systems some of which encode one or more components of a CRISPR complex, as well as methods for the design and use of such vectors. Also provided are methods of directing CRISPR complex formation in eukaryotic cells to ensure enhanced specificity for target recognition and avoidance of toxicity and to edit or modify a target site in a genomic locus of interest to alter or improve the status of a disease or a condition.
    Type: Application
    Filed: October 17, 2023
    Publication date: April 11, 2024
    Inventors: David Benjamin Turitz Cox, James E. Dahlman, Feng Zhang
  • Patent number: 11624078
    Abstract: The invention provides for systems, methods, and compositions for altering expression of target gene sequences and related gene products. Provided are structural information on the Cas protein of the CRISPR-Cas system, use of this information in generating modified components of the CRISPR complex, vectors and vector systems which encode one or more components or modified components of a CRISPR complex, as well as methods for the design and use of such vectors and components. Also provided are methods of directing CRISPR complex formation in eukaryotic cells and methods for utilizing the CRISPR-Cas system. In particular the present invention comprehends optimized functional CRISPR-Cas enzyme systems, wherein the guide sequence is modified by secondary structure to increase the specificity of the CRISPR-Cas system and whereby the secondary structure can protect against exonuclease activity and allow for 5? additions to the guide sequence.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: April 11, 2023
    Assignees: THE BROAD INSTITUTE, INC., MASSACHUSETTS INSTITUTE OF TECHNOLOGY, PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Feng Zhang, Omar O. Abudayyeh, James E. Dahlman, Patrick Hsu, David A. Scott
  • Publication number: 20220010339
    Abstract: The invention provides for systems, methods, and compositions for altering expression of target gene sequences and related gene products. Provided are structural information on the Cas protein of the CRISPR-Cas system, use of this information in generating modified components of the CRISPR complex, vectors and vector systems which encode one or more components or modified components of a CRISPR complex, as well as methods for the design and use of such vectors and components. Also provided are methods of directing CRISPR complex formation in eukaryotic cells and methods for utilizing the CRISPR-Cas system. In particular the present invention comprehends optimized functional CRISPR-Cas enzyme systems, wherein the guide sequence is modified by secondary structure to increase the specificity of the CRISPR-Cas system and whereby the secondary structure can protect against exonuclease activity and allow for 5? additions to the guide sequence.
    Type: Application
    Filed: September 29, 2021
    Publication date: January 13, 2022
    Applicants: The Broad Institute, Inc., Massachusetts Institute of Technology, President and Fellows of Harvard College
    Inventors: Feng ZHANG, Omar O. ABUDAYYEH, James E. DAHLMAN, Patrick HSU, David A. SCOTT
  • Publication number: 20210260195
    Abstract: The present invention provides inventive conjugated polyethyleneimine (PEI) polymers and conjugated aza-macrocycles (collectively referred to herein as “conjugated lipomers” or “lipomers”) containing one or more groups of the formula (iii): wherein R3 and R4 are as defined herein. Also provided are compositions comprising the inventive conjugated lipomers, and methods of preparation and use.
    Type: Application
    Filed: December 15, 2020
    Publication date: August 26, 2021
    Applicant: Massachusetts Institute of Technology
    Inventors: James E. Dahlman, Avraham D. Schroeder, Daniel Griffith Anderson, Robert S. Langer, Christopher G. Levins
  • Patent number: 10954514
    Abstract: The present invention generally relates to CRISPR systems or complexes, such as those with an escorted guide RNA.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: March 23, 2021
    Assignees: The Broad Institute, Inc., Massachusetts Institute of Technology
    Inventors: James E. Dahlman, Feng Zhang
  • Patent number: 10933139
    Abstract: The present invention provides inventive conjugated polyethyleneimine (PEI) polymers and conjugated aza-macrocycles (collectively referred to herein as “conjugated lipomers” or “lipomers”) containing one or more groups of the formula (iii): wherein R3 and R4 are as defined herein. Also provided are compositions comprising the inventive conjugated lipomers, and methods of preparation and use.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: March 2, 2021
    Assignee: Massachusetts Institute of Technology
    Inventors: James E. Dahlman, Avraham D. Schroeder, Daniel Griffith Anderson, Robert S. Langer, Christopher G. Levins
  • Publication number: 20200362369
    Abstract: The invention provides for systems, methods, and compositions for altering expression of target gene sequences and related gene products. Provided are structural information on the Cas protein of the CRISPR-Cas system, use of this information in generating modified components of the CRISPR complex, vectors and vector systems which encode one or more components or modified components of a CRISPR complex, as well as methods for the design and use of such vectors and components. Also provided are methods of directing CRISPR complex formation in eukaryotic cells and methods for utilizing the CRISPR-Cas system. In particular the present invention comprehends optimized functional CRISPR-Cas enzyme systems, wherein the guide sequence is modified by secondary structure to increase the specificity of the CRISPR-Cas system and whereby the secondary structure can protect against exonuclease activity and allow for 5? additions to the guide sequence.
    Type: Application
    Filed: April 9, 2020
    Publication date: November 19, 2020
    Applicants: The Broad Institute, Inc., Massachusetts Institute of Technology, President and Fellows of Harvard College
    Inventors: Feng ZHANG, Omar O. ABUDAYYEH, James E. DAHLMAN, Patrick HSU, David A. SCOTT
  • Patent number: 10696986
    Abstract: The invention provides for systems, methods, and compositions for altering expression of target gene sequences and related gene products. Provided are structural information on the Cas protein of the CRISPR-Cas system, use of this information in generating modified components of the CRISPR complex, vectors and vector systems which encode one or more components or modified components of a CRISPR complex, as well as methods for the design and use of such vectors and components. Also provided are methods of directing CRISPR complex formation in eukaryotic cells and methods for utilizing the CRISPR-Cas system. In particular the present invention comprehends optimized functional CRISPR-Cas enzyme systems, wherein the guide sequence is modified by secondary structure to increase the specificity of the CRISPR-Cas system and whereby the secondary structure can protect against exonuclease activity and allow for 5? additions to the guide sequence.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: June 30, 2020
    Assignees: THE BOARD INSTITUTE, INC., MASSACHUSETTS INSTITUTE OF TECHNOLOGY, PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Feng Zhang, Omar O. Abudayyeh, James E. Dahlman, Patrick Hsu, David A. Scott
  • Publication number: 20190233814
    Abstract: The invention provides for systems, methods, and compositions for targeting nucleic acids. In particular, the invention provides non-naturally occurring or engineered DNA or RNA-targeting systems comprising a novel DNA or RNA-targeting CRISPR effector protein and at least one targeting nucleic acid component like a guide RNA.
    Type: Application
    Filed: December 16, 2016
    Publication date: August 1, 2019
    Applicants: The Broad Institute, Inc., Massachusetts Institute of Technology, President and Fellows of Harvard College
    Inventors: Feng ZHANG, Bernd ZETSCHE, Fei RAN, James E. DAHLMAN
  • Publication number: 20190167795
    Abstract: The present invention provides inventive conjugated polyethyleneimine (PEI) polymers and conjugated aza-macrocycles (collectively referred to herein as “conjugated lipomers” or “lipomers”) containing one or more groups of the formula (iii): wherein R3 and R4 are as defined herein. Also provided are compositions comprising the inventive conjugated lipomers, and methods of preparation and use.
    Type: Application
    Filed: November 5, 2018
    Publication date: June 6, 2019
    Applicant: Massachusetts Institute of Technology
    Inventors: James E. Dahlman, Avraham D. Schroeder, Daniel Griffith Anderson, Robert S. Langer, Christopher G. Levins
  • Patent number: 10117934
    Abstract: The present invention provides inventive conjugated polyethyleneimine (PEI) polymers and conjugated aza-macrocycles (collectively referred to herein as “conjugated lipomers” or “lipomers”) containing one or more groups of the formula (iii): wherein R3 and R4 are as defined herein. Also provided are compositions comprising the inventive conjugated lipomers, and methods of preparation and use.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: November 6, 2018
    Assignee: Massachusetts Institute of Technology
    Inventors: James E. Dahlman, Avraham D. Schroeder, Daniel Griffith Anderson, Robert S. Langer, Christopher G. Levins
  • Publication number: 20170349894
    Abstract: The present invention generally relates to CRISPR systems or complexes, such as those with an escorted guide RNA.
    Type: Application
    Filed: June 12, 2017
    Publication date: December 7, 2017
    Inventors: James E. Dahlman, Feng Zhang
  • Publication number: 20170349914
    Abstract: The invention provides for delivery, engineering and optimization of systems, methods, and compositions for manipulation of sequences and/or activities of target sequences. Provided are delivery systems and tissues or organ which are targeted as sites for delivery. Also provided are vectors and vector systems some of which encode one or more components of a CRISPR complex, as well as methods for the design and use of such vectors. Also provided are methods of directing CRISPR complex formation in eukaryotic cells to ensure enhanced specificity for target recognition and avoidance of toxicity and to edit or modify a target site in a genomic locus of interest to alter or improve the status of a disease or a condition.
    Type: Application
    Filed: June 12, 2017
    Publication date: December 7, 2017
    Inventors: David Benjamin Turitz Cox, James E. Dahlman, Feng Zhang
  • Publication number: 20170283831
    Abstract: The invention provides for systems, methods, and compositions for altering expression of target gene sequences and related gene products. Provided are structural information on the Cas protein of the CRISPR-Cas system, use of this information in generating modified components of the CRISPR complex, vectors and vector systems which encode one or more components or modified components of a CRISPR complex, as well as methods for the design and use of such vectors and components. Also provided are methods of directing CRISPR complex formation in eukaryotic cells and methods for utilizing the CRISPR-Cas system. In particular the present invention comprehends optimized functional CRISPR-Cas enzyme systems, wherein the guide sequence is modified by secondary structure to increase the specificity of the CRISPR-Cas system and whereby the secondary structure can protect against exonuclease activity and allow for 5? additions to the guide sequence.
    Type: Application
    Filed: June 12, 2017
    Publication date: October 5, 2017
    Inventors: Feng Zhang, Omar O. Abudayyeh, James E. Dahlman, Patrick Hsu, David A. Scott
  • Publication number: 20160206740
    Abstract: The present invention provides inventive conjugated polyethyleneimine (PEI) polymers and conjugated aza-macrocycles (collectively referred to herein as “conjugated lipomers” or “lipomers”) containing one or more groups of the formula (iii): wherein R3 and R4 are as defined herein. Also provided are compositions comprising the inventive conjugated lipomers, and methods of preparation and use.
    Type: Application
    Filed: January 14, 2016
    Publication date: July 21, 2016
    Applicant: Massachusetts Institute of Technology
    Inventors: James E. Dahlman, Avraham D. Schroeder, Daniel Griffith Anderson, Robert S. Langer, Christopher G. Levins
  • Patent number: 9238716
    Abstract: The present invention provides inventive conjugated polyethyleneimine (PEI) polymers and conjugated aza-macrocycles (collectively referred to herein as “conjugated lipomers” or “lipomers”) containing one or more groups of the formula (iii): wherein R3 and R4 are as defined herein. Also provided are compositions comprising the inventive conjugated lipomers, and methods of preparation and use.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: January 19, 2016
    Assignee: Massachusetts Institute of Technology
    Inventors: James E. Dahlman, Avraham D. Schroeder, Daniel Griffith Anderson, Robert S. Langer, Christopher G. Levins
  • Publication number: 20120251560
    Abstract: The present invention provides inventive conjugated polyethyleneimine (PEI) polymers and conjugated aza-macrocycles (collectively referred to herein as “conjugated lipomers” or “lipomers”) containing one or more groups of the formula (iii): wherein R3 and R4 are as defined herein. Also provided are compositions comprising the inventive conjugated lipomers, and methods of preparation and use.
    Type: Application
    Filed: March 23, 2012
    Publication date: October 4, 2012
    Applicant: Massachusetts Institute of Technology
    Inventors: James E. Dahlman, Avraham D. Schroeder, Daniel Griffith Anderson, Robert S. Langer, Christopher G. Levins